
via this auction

"Classic Roland drum machine from 1980 with 13 analogue drums including: kick, snare, lo/hi toms, open/closed hi-hats, cymbal, cowbell & lo/mid/hi congas. It sounds a little like a cross between a CR-78 and a TR-808. This unit has the full set of Analogue Solutions modifications - MIDI, tonal controls, individual outputs - at a cost of £300. (That was several years ago & I think Tom Carpenter has raised his prices since then!)...The unit has also had the following mods fitted by Tom Carpenter of Analogue Solutions here in the UK:
- MIDI: note on/off of all drums except the 3 congas. Accent is available via velocity - high value on/low value off, amount set by the Accent pot. Accent is only available on the voices designed to respond to it in the original spec - not clap, cowbell, or clave. The mod does not support MIDI Clock or Time Code.
- Tonal: BD Tune 1/2, SD Tune/Decay/Snappy, Clap Snap/Filter, HH/CY Filter, HH Decay, CB Tune 1/2 & Decay, LT Tune, HT Tune. BD Tune 2 does nothing - a design flaw on Analogue Solutions behalf rather than a fault apparently.
- Individual Outs: 6 outputs on 3.5mm jacks corresponding to the 6 level pots with drums grouped together according to original design. The level pots do not affect the volume at the individual outs.
This unit has been in storage for 2 years and on testing, I have found the following problems with the mods:
- MIDI: accent via velocity is only audible over the Main output.
- Tonal: the Filter & Snap on the Clap voice do not function correctly - the noise component (the Snap) of the voice is louder than it should be and the Filter pot does not reduce the noise as it should. The pitch of LT & HT Tune mods can be unstable and can interact with each other.
- Individual Outs: at very high Tune or Filter settings there is some high frequency noise in the voice channels, particularly in the cowbell."










































